In 1970, Lamborghini had to redesign the Islero to meet new United States safety and emissions regulations. The new car was built on a shortened version of the same platform as the Espada. Two different models were made, the original GT (1970-1973) model having 350 bhp (260 kW) V12, and the GTS (also know as Jarama S) (1973-1976) with its output upped to 365 bhp (272 kW). Also, with the GTS there were a few minor body modifications and power assisted steering, removable roof panels, and an automatic transmission became available as options. A total of 328 Jaramas were built.